Overdraft and signal printing mechanism for calculating machines



Aug. 18, 1931. F. -w. BERNAU 1,319,063

OVBRDRAIT AND SIGNAL PRINTING MECHANISM FOR CALCULATING MACHINESOriginal Filed Oct. 31, 1922 15 Sheets-Sheet l b N A mum:

F. W. BERNAU OVERDRAP'T AND SIGNAL PRINTING MECHANISM F R CALCULATINGMACHINES Original Filed Oct. 31, 1922 Aug. 18, 1931.

15 Sheets-Sheet 2 F. W. BERNAU OVBRDRAFT AND SIGNAL PRINTING MECHANISMAug. 18, 1931.

FOR CALCULATING MACHINES I Original Filed Oct. 31, 1922 15 Sheets-Sheet25 Aug. 18, 1931. F. w. BERNAU OVERDRAI'T AND SIGNAL PRINTING MECHANISMFOR CALCULATING MACHINES Original Filed Oct. 51. 1922 15 Sheets-Sheet 4Q5131 ifiwevuior:

F. W. IERNAU All. 18, 0 Q .81 (WW AND- SIGNAL PRINTING IIOHANISI f0!CALCULATING IAOHINES Original Filed 00?- 31. 1922 15 Snail-Shut B 0.39%ku.\ NPQQQ WMMP A x-18,1931. mm 1,8 8-

F. W. B! OVIRDRAI! AND SIGNAL PRINTING IEQHANISI ton CALCULATINGIIAOHINBS Original Filed Oct. 31. 1922 15 Shoal-Shut 6 Aug. 18, 1931. F.w. BERNAU 1,819,068

I OVBRDRAFT AND SIGNAL PRINTING MECHANISM FOR CALCULATING MACHINESOriginal Filed 001:. 31, 1922 15 Sheets-Sheet '7 x I v F. W. BERNAUOVERDRAF'T AND SIGNAL PRINTING MECHANISM 8 w ,t w a 5 1 2 2 9 l 1 3 Aug.18, 1931.

IOR CALCULATING MACHINES Original Filed Oct.

Au 18, 1931. F. w. BERNAU 1,319,063 g OVERDRAFT AND SIGNAL PRINTINGMECHANISM FOR CALCULATING MACHINES Original Filed Oct. 31, 1922 15Sheets-Sheet 9 Aug. 18, 1931. F. w. BERNAU 1,819,063

QVERDRAFT AND SIGNAL PRINTING MECHANISM FOR CALCULATING MACHINESOriginal Filed 001;. 31, 1922 15 Sh'eets-Sheet. l0

F. W. BERNAU I OVERDRAFT AND SIGNAL PRINTING MECHANISM FOR CALCULATINGMACHINES Original Filed Oct.

Aug. 18, 1931.

1 8 6... 0w 9m 1 S awn 1 .0 s 5 1 2 2 1 1 3 F. w. BERN'AU Aug. 18, 1931.1,819,068

OVERDRAF! AND SIGNAL PRINTING MECHANISM 20R CALCULATING MACHINESOriginal Filed Oct. 31, 1922 15 Sheets-Sheet 12 Mk max kRQ Aug. 18,1931.v F. w. BERNAU 1,319,053

OVERDRAFT AND SIGNAL PRINTING MECHANISM FOR CALCULATING MACHINESGriginal Filed Oct. 31, 1922 15 Sheets-Sheet 13 Aug. 18, 1931. F. w.BERNAU OVEBDRAPI' AND SIGNAL PRINTING NECHANISI r03 CALCULATING MACHINESOriginal Filed Oct. 31, 1922 15 Sheets-Sheet l4 tmmmL 1931- j F. w.BERNAU 1,819,068

OVERDRAH' AND SIGNAL PRINTING MECHANISM NR CALCULATING MACHINES OriginalFiled Oct. 31, 1922 15 Sheets-Sheet 15 M larly intended for use in mecPatented Aug. 18, 1981 UNITED snares PATENT OFFICE rnnnnmcx w. 3mm, p mamnion-re mm ammo mnwiurnn conanr; or man. an a conronarmv or m mnsnr aovmnar'r marouan m9 M103 oawuume um Original application fled October 1.Mal In Divided and this plinth! fled W l V 1.,1. luminescence.

The present ap lication a division of my Patent No. 1, 1,701 October 15,

This invention relates to calculating machines which are adapted fiorggforming addition and subtraction, and if red, for listin numbers andfor the results of a dition an subtraction carried on by the machine. 1Q

y present improvemen particu- 'on with the anisms of the well fEllisprinting calculating machine, especially the mechanisms set forth inpatfiits to Halcolm Ellis No. 1,065,792, June 24,1913 Total nal device;No. 1,197,270, 1 mher 5, 191 Combined addin machine writer; and No.1,2035 November 7, 1916, Mechanical calculator, are and illustrated inconnection with ifmuch of these atented machines as will a a clearunderstanding of the constructions, operations, functions and vention.

It is to be understood, however, that the present improvements andrinciplce involved therein are not, 1 y, restricted to embodiment ininular to the Ellis machine as these improvements me be used in othercalcula the claims are to be an; m; as vcoveriiig an improvements invo II incip es of he invention in whategridalcul zing machine they may be emloyedi There are certain classes of work which a calculating machine isto handle,

demanding notice to o rthat the an overdraft, thew July he in debititems accumulatedv 1- the credit the du 1e: we H M items; depositors abank com. tion o mechanism which I lock stitute a class ofwork notifiorf r or H 1, cation is important account in means, and t i ch will W thethat condition is loxrdrafiuhlimurthermore itisimportan aa" machine notonl signal the fan, that an ac; count is ove rawn but al'aagenable theoperator to determine the oi the overas the qhepurpose draftandtorintonthe handled by e machine a count is overdravm or the that amountand to so thefigures overdrawn, the debits ex 9 may be individual or duex, I have d principles involved in the m scribed balance or mu hey butit is m be underidentifythem that the will be pro-nan m tly zlfisplayedon the sheet and on carbon copies ereo . Modern calcula machines,particularly those intended to dle hanknand, trust compan accounts, areelectrically driven under control of a starting bar and I haveillustrated the presentimmvements in connection with the startingmechanism of the Ellistmachine, such starting signal, one it):antomaticall lock the starting sbar when an overdraft is present in thethe other mechanism of the the balance or total keys by the me of whichthe balance or total rep .4. m

and shown a d adding and operationahaveheen n8 machine is conducted, isshown when the o ted.

l insure against any. operafion ,.of the machine after the itemsaccumulator and deducted -it cremlt in stood that-the invention is notlimited to theconjointueeoithetwo mama except where eoatated in claimsrecent invention particularly reforlockingtheetart starting bar lock isera to prevent any operation of the machine r h condition of theaccumulator in which the after an overdraft has occurred until suchstarting bar has been purposely released by the operator.

Therefore, when attempt is made to take the balance, and it is foundthat an overdraft exists, it becomes necessary in order to print thebalance, for the operator to manually restore the lock to normal,released, condition in order that the machine may be operated.

To enable this to be done, the locking mechanism is coordinated with thedecimal slide of the Ellis machine, such slide being disclosed in PatentNo. 1,197,276, in such manner that on operating the slide the lock willbe released so that the operator can then print the amount of theoverdraft.

However, inasmuch as an overdraft is an important and abnormalcondition, it is desirable that it be printed in a distinguishing mannerso that it will be easily picked out by the e e. To that end, novelmeans is provided or printing the item represent ing an overdraft in adistinguishing fashion, as in a different'color, for instance red, and,also, identified by a sign so that the item will be marked in adistinguishing manner on any carbon copies, such distinguishing printingoccurring on the next operation of the machine after the lock has beenreleased as that operation causes printing of the amount representingthe overdraft. The operation of printing an amount representing theoverdraft in a distinguishing color may be carried out by employing abichrome inked ribbon, and ribbon vibrator therefor, and combiningtherewith novel means which is automatically set so that when themachine operates after the release of the lock, the ribbon vibrator orshift will be moved for that one operation a suflicient distance to brinthe differently colored, say red, section 0% the ribbon in line with theprinting type so that a red impression will be made when the amount ofthe overdraft is rinted, the mechanism immediately therea ter beingrestored to its normal condition so that succeeding items will beprinted in the usual color.

Identification of an overdraft is accomplished by employing means forautomatically printing the overdraft with a distinguishing mark or sign.When this means is employed the same overdraft is identified not only onthe original ledger sheet but also on all carbon copies being made.

Identification of an overdraft by print ing it with a. distinguishingcharacteristic may, according to my invention, be had by printing theoverdraft in a different color, or accom anied by a sign or signal, orboth met ods may be used simultaneously.

The Ellis Patent N 0. 1,203,863, dated November 7, 1916, provides asubtraction key in addition to the usual controlling keys of the Ellismachine; furthermore, both of the accumulators of the duplex calculatorshown in that patent are adapted for the performance of either additionor subtraction.

In the present invention I prefer to have one of the accumulatorsadapted for both addition and subtraction, as with the accumulators ofthe machine of the Ellis Patent N 0. 1,203,863, and to have the otheraccumulator a straight adding accumulator. The straight addingaccumulator may be of the construction set forth in my Patent No.1,536,757, dated May 5, 1925.

It is to be understood, however, that both of the accumulators employedin connection with the present-improvements may be adapted for bothaddition and subtraction as, for instance, in Ellis Patent No.1,203,863.

While the subtraction key may be otherwise arranged, I prefer tosubstitute it for one of the controlling ke s, for instance, the Dr.sub-total key. 0 the other controlling keys of the Ellis machine, thesub-total and total keys may be suitably labeled to represent the totaldeposits and the balance, respectively, and another of the keys may belabeled to represent the total checks, to particularly adapt the machinefor use in bank work.

As described and shown the subtraction key of the present machine isadapted to become automatically restored after the machine has gonethrough its cycle of operation, making it necessary for the operator tohold down the subtraction key by the finger if a series of subtracting oerations are to be carried on consecutively ut as it is a sim le matterto provide latching means for hol ing down the subtraction key, whenitis desired to carry on a series of subtracting operations, it is to beunderstood that such latch may be used. In ordinary bank accounting, itis generally inadvisable to provide means for latching the subtractingey as this opens the way for forgetfulness on the part of the operatorwhich would result in improper operation in that class of work.

Combined with the subtracting key is special mechanism, substituted forcertain of the pieces, cams, and levers of the machine of EllisIatent N0. 1,203,863 and, additional thereto, a link and a special hook or pawlby which the parts are conditioned so that the accumulator is broughtinto a condition by which it will perform subtraction on the nextoperation of the machine. It is to be understood that the foregoingmechanism does not'interfere with the carrying on of addition in thestraight adding accumulator as, if both addin and subtractingaccumulator and straig t adding accumulator are employed, subtractioncan be a1 to t e mechanism of I naiacel carried on in one accumulatoraddition is being performed in accumulator. Furthermore, a total he fromone accumulator, the summit of wh ch may be subtracted from theaccumulat on of the remaining accumulator.

If the resent improvements'ire provided in an El 's machine of the clamemploying an automatic tabulating meclmniem for shifting the carriagefrom one tabulated position to another, it becomes necessa y to preventautomatic tabulation on the next operation of the after an overdraft asoccurred. Mechanism is provyhen the decimal is position the urose ofsetting the parts so ins may be released and the overdraft printed,causes the automatic tab mechanism to be rendered ino until the decimalposition.

The overdraft mechanism which the lock or locks or signal or heretoforereferred to are operated and nisms are set, is under the control of thesubtracting pawl or hook of thi highest or der of the adding andsubtraotingaccumulater. The subtracting pawl is of the same constructionas the cone spending device of the Ems Patent Il'o. 1,203,863. Combinedwith this mbtractmg pawl or hook and with the ahiit bar o rative aud toremain so do is to normal overdraft mechanisms to are operated to lockflie such as the starting bar once or total keysi duplex, combined,lockin means is employed. Patent No. 1,508,267, September 9, 19:24, Ihave the ahtomatlc-locking of the total and sub-totaliikeye by a certampart of the mechanism hereinafter set forth but neither the locking ofthe bar or operatin means nor the combination of the starting lockanditotol and subtotal key lock 18 claimed therein The resentimprovements additiom ills machine reference is to be had to theentioned Ellis patents for a full of all mechanisms and their omtlonawhich are directly or indirectly re to the said improvements. In thefollowing description and accom anymg reference is made to o y so muchof Ellis machine as aflord a clear understanding of the relationship offie present -improvements thereto.

I am aware that may be resorted to in carrying outthaeseenfialprinciples of the various improvements hereinloclm for key 'Dthermechaor book itself p end of decimal slide, and v referredbeforeootlinedandwhlcharehereimfh specifically described and are shownin the accompanying dra It is to be understood therefore, that,constructions speeiiically swim and shown, whileithe preferrodembodiments of the invention as at premnt devised by me, are t" ofdigit; hhw imid? pa In e accompan p Figure 1 is an ovation of left handside of the machine, showing, only so much of the mechanisms of thepatented Ellie machine as will afford a clear understandmg of such ofthe present improvements as directly relate to the subtracting hemechunit}I anism for controlling the u a subtract accumulator, overdraortotal and sub-total. keys, the

being in depressed 'tion and the mechamsms controlled thereby in theirset F' .2isasimi1arview,thetotalorbalance and the sub-total or totaldsposits ys being locked by the overdraft mechamsm, an overdraft havingpreviously 'o'ccurred, t he subtractionksy being in normal s Fxg. 3 isan elevation at the hand s de of machine, a number 0 mechan sms beingomitted for the sake of clearnoes, showing certain partsofthe handtabelation and automatic tabulation mechamma, the not link for, theoverdmft mecha- 'condition normal position, and position to performautomatic t Fig. 41s a v0 view, the side in dotted lines, m theoverdraft m 1 d cperatgeroonnectwnstothe locks forthestarta or sub-totallrey,'the ribbon .inechaofthemachmebemgomitwdforthesaheof clear-batheoverdraft mechanism and lock: beeng in nowtion; Fig. Bisa viewmechanism, showing the overdraft lock in locked position;

6 is a plan view-of the parts shown ml'iig.8,withcertainomiseiom;

F his a viewsimilar to Fig. 8, the set avmgbeen moved to therig'ht bythe manipulation of the decimal slide, the tabulating book being innormal and th tabulating control lever being in position to preventautomatic tabulation;

Fig. 8 is a similarview, the hook having risen andbeing prevented fromoperating the tabulating mechanismbv the balance and total depositaksyesubtracting balance ortotahandtctaldeposits ice I ice III

at the end of the forward stroke of the operating shaft;

Fig. 9 is a plan view of the parts when in the position shown in Fig.7;

F 1g. 10 is a part side elevation and part sectional view showingcertain of the mechanisms at the right hand side of the machine and,also, the overdraft mechanism at the left hand side of the machine, theshift bar of the accumulator being set for addition and the overdraftmechanism and starting bar overdraft lock and the ribbon mechanism beingin normal condition;

Fig. 11 is a rear elevation of the machine, showing the overdraft shaftand certain of the devices related thereto;

Fig. 12 is a plan view of the overdraft mechanism, ribbon mechanism, andlinks or bars that control the locks, the decimal slide being shown ashaving been moved toward the left, the front part of the machine andvarious mechanisms being omitted;

Fig. 13 is a partly sectional, partly elevational, detail view of theoverdraft mechanism as set for carrying on a subtractin operation,before an overdraft has taken p ace;

Fig. 14 is a similar view showing the position of the parts after anoverdraft has occurred;

Fig. 15 is a detail side elevation of the ribbon shift mechanism when innormal position for causing ordinary printing, say in black, to occur;

Fig. 16 is a similar view showing the mechanism arranged so that theribbon vibrator will be shifted to cause rinting in a distinctive color,say red, as w en an overdraft has taken place;

Fig. 17 is a front view of the decimal slide shown in its extreme righthand position;

Fig. 18 is a side elevation of the tabulating mechanism, showing thekeys for the typewriter and adding keyboards and their manner ofcooperation with the mechanism forsetting the tabulating plungers;

Fig. 19 is a rear elevation of the mechanism of the tabulating'sectionof the machine showing its cooperation with the tabulating keys of Fig.18 and the escapement mechanism of the machine;

Fig. 20 is a bottom edge view of the tabulating section of Fig. 19,certain of the parts being omitted;

Fig. 21 is a top edge view thereof;

Fig. 22 is a section on the line 2222 of Figs. 19 and 21;

Fig. 23 is a section taken on line 2323 of Figs. 19, 20, 21;

Fig. 24 is a side elevation of mechanism for automatically printingidentifying signs or signals, the parts being in normal position' Fig.25 is a similar view, the parts being in position to print a subtractingsign;

Fig. 26 is a similar view, in position to print a credit an overdraft;

Fig. 27 is a detail tain of the 24, 25, 26;

Fig. 28 is a detail of a 24, 25, 26; and

Figs. 29 and 30 are views illustrating samples of the printed record.

As set forth in Ellis Patents N o. 1,197,27 6 and No. 1,203,863, themachine is driven or operated, either by a handle, or by an electricdrive, neither of which is shown, from a shaft 01. In the accompan ingdrawings only so much of the patented llis machine is shown as willafford a clear understanding of the relation of the present improvementsthereto. Modern calculating machines, particularly those intended forloose leaf ledger work, are electrically driven and controlled by astarting bar. I have, therefore, illustrated starting bar mechanism forthe control of the electric drive such mechanism appearing in Figs. 4,5,10

and 12.

piece M051 (Fig.

the parts being balance sign, or

side elevation of cerparts of the mechanism of Figs.

link shown in igs.

The shaft 01 carries a 3) which is operated by the electric drive.

Secured to shaft Pl which is mounted in the frame and in the side plateP50 of the printing section is a crank 0160 which is operated from theiece M051 by the printing pitman O61. arried by the shaft P1 is thepaper feed leverP74.

Referring to Figs. 3, 4, 6, 7, 8, 9, 10, 24, 25, 26, the signal settingarm which is moved by the cams N 67R and 67NR that swing the frames ofthe wheels of the accumulators, as shown in Ellis Patent N 0. 1,065,792,appears at 6GP. One of the printing type sectors is shown at P54,pivoted to arm 52P at P10 and adapted to be set by link P53; the signalF which is pivoted to arm P52 at P10, is operated by link 23.55 byimproved means hereinafter described, of which the signal lever 61Ppivoted at PlOP constitutes a art. p The decimal slide P67 is operatedby a slide B53 connected to the hook P68 of the slide P67. The piece B53has a button 10B and is movable over the scale B154. The decimal slideP67 appears in Figs. 3, 4, 6, 7, 8, 9, 10, 12.

The lever P272 (Figs. 3, 4, 6, 10, 12) controls the automatic turning ofthe laten.

A plate D50 which is secured to t e left hand end of the operating shaft01 (Figs. 1, 2) affords the means b which the motion of said shaft isutilized fbr the operation of the accumulators, according to thecontrols effected by the various controlling keys.

Such of the present improvements as relate tothe controlling keys,including the sub tracting key K67, the balance or total key K63 for theupper accumulator, and the subtotal key or total deposits key K54 areshown more particularly in Figs. 1, 2, 1. p

The lower accumulator is diet shown in detail. This accumulator as ywith themechanisms of Figs. 1 all 2, is controlled only for urposes ofaddition and.

will be constructs as set forth myPatent No. 1,536,757, dated Ma 5,

It is to be understoo however, that the lower accumulator may be acombined adding and subtractin accumulator as disclosed in Ellis Patent0. 1,203,868 as additional mechanism could be employed jeo thatsubtraction as well as addition could be carried on in the loweraccumulator connection with the overdraft" features of the presentinvention. f

Onlyso much of the pper otimbined add.- ing and subtrac is s in Figs. 4,10, 11, as willa'zfl'ord a clear understanding of the operatiblii'of themechanisms when an overdraft place, and the relationship of thisitccuiitulator to the improved mechanisms shown in Figs. 1 and 2 bywhich the upper accumulator is controlled. Reference 19 to be ha toEllis Patent No. 1,203,863 for a de disclosure of the generalconstruction and principle of The upper adding and subtractingaccumuator.

The mbtmction key subtracting mechanism-The ke used fw' setting themachine so that so traction may be" performed in the upper accumulatoris shown at K67 (Figs. 1 and 2gtthiskey' being, in the present instance,su ituted for the Dr. sub-total key K67 of the lower accumulator of theEllis Patent No. 1,197,276; It is not essential, however, that theDr'..sub-total key of the lower accumulator be seed with. A latch L160which is actuate by spring 81L and is pivoted at, L20, is, adapted tolatch the subtraction key K67 when the latter is in depressed position.Pivotally connected to the latch L160 at l'h23Lis 0. Ion set link 64Lwhich is provided at N18 wit a pin and is provided at X with a cam slotso fashioned and located the}: the set link is normally sustained in theiosition shown in Fig. 2 by a screw pin N17 projecting from the frameB47 and'on whicli said set link rests. When the subtraction key K67 isdepressed, however, the movement of the set link 64L to the left, causesthe screw pin N17 to enter the cam slot X- which thereupon allows theset link to dflip to the position shown in Fig. 1. The N1 and 1N carrythe cams N673 (Figs. 24, 25, 26) which swing the'rwheels of the upperand lower accumulators into and out o engagement'with the adding racksor actuators, as explained in Ellis Patent No.

1,203,863, and carry on their the cranks N and N65, These cranks haverollers A30 :1

' vely.

ptedtobeheldinthe latch and key being of rearwardly or forwardlyarranged A170 and 170A of scissors like dcfiifih it $1? t 1% w are awnor conn them as at No. 1,536, 57, dated a 5, 1925 by which theaccumulator is suits 1y held in its enand H- relataontotheadding we;

As shown in Fi 4, 10, 12, 1a 14, the irregular shaped "ft bar N90 0Patent No. 1,203,863 is employed and on; hand end of this bar there issecured-e crank lever 69N which has a. are stud D13 at its lower end and0 N19 at its upper end. 8 ring 8211' normally pulls the crank lever 69in a counterclockwise direction.

A subtracting o sting hook 68R a slot 68H byI whi it is slidahly on thepin 19. This hook is normally drawn rearwardly on the pin N19 by twocontractile coil springs N81 located on o posite sides thereofandconnected to c pin N19 and to a pin 171'? on the both. One of the 9rings N81'is obscured by the hook 68N in igs. 1 and 2. A coil spring N8which is connected to one of the -:17N and to the subtracting detent itserves the double purpose of ten todraw the subtracting operating hook68downwardly and the subtracting detent N69 upwardly. Beferi-ingagaintolliglandhthcre ispivotedonascrew Last! camL162whichhasscametits thanendwith which the pin ([321- on latch L160 normally a: the said pin riontheeamendof 62anddep sai cam L162. when the subtraction key is dep asshown in Fig. 1. A can lever 60L is also rvoted on the screw 1 .2511 andis conn cam L162 by a contractile L w normally holds the left hen an ofthe subcamleverwLr-aisedandincm tact with a coded stud 'L16L on thesubtracting cam L162.

A total cam lever 58L is ivoted on screw LQIBL and has its left endabutting a L21L projecting from the on cam L162. The normaliposition ofthe cam lever 58L is maintained by the ment of the right hand cam notchthereof with in L14L carried by the latch 56L forthe on total or totaldetposits key K such e same gen construction set forth in Ellis PatentNo. 1,197,- 276. A sprin 56L! normally draws the u r and of t e latch56L against the stem 0 ey K64 so that when the he is depressed the'latchwill engage the note thereof, A hardened shoe L is secured by rivets 28Dto the left hand end of the subtracting cam lever 60L for coo ration,when set thehe K63,K64an K67,withtheh cried cc D90 on the lower end offlying m-

